What to Do If You’re Gazumped: A Buyer’s Survival Guide (2026)

Your offer was accepted. You'd told your family, booked the survey and maybe started measuring for curtains. Then the estate agent calls: someone else has offered more, and the seller is taking it.

Being gazumped is one of the most gutting moments in buying a home, and in England and Wales it's entirely legal. This guide isn't a dictionary definition. It's what to actually do, in the next 48 hours and long before you ever get that call.

The short answer

Gazumping is when a seller accepts a higher offer from another buyer after accepting yours, but before contracts are exchanged. In England and Wales it's legal right up to exchange, because until then neither side is bound and you have no contract to enforce.

If it happens to you, you have four realistic moves: match or beat the rival offer, hold firm and make your case to the seller, propose a lock-out agreement, or walk away. Below we explain which fits your situation, when a lock-out agreement is legally enforceable and what the government's 2026 reforms will change. Scotland works differently, which we cover near the end.

Gazumping in one minute

Is it legal? Yes. Under the Law of Property (Miscellaneous Provisions) Act 1989, a contract to sell land must be in writing, contain all the agreed terms and be signed by both parties. In practice that happens at exchange. Until then, everything is "subject to contract", so either side can walk away for any reason without owing the other anything.

There's another reason it happens. Estate agents must pass every offer they receive to the seller, promptly and in writing, right up to exchange, unless the seller has said in writing that they don't want offers of that kind. So a sale being agreed doesn't stop new offers reaching the seller.

Gazumping is often confused with its mirror image, gazundering:

Both exploit the same weakness: the long, non-binding gap between "offer accepted" and exchange. If you're a seller being gazundered, much of the strategy below works in reverse.

Gazumped right now? Your options in the next 48 hours

Speed and clarity matter more than emotion here. Work out which of these fits:

• Match or beat the rival offer. The most direct route. First, test the rival bid. An agent mustn't knowingly misrepresent whether an offer exists or who has made it, so ask them to confirm the position in writing. If you genuinely want the property and can afford more, matching can end it in one phone call.
• Hold firm and make your case to the seller. Through the agent, remind the seller that you're proceeding, funded and ready, and that a higher offer from an unknown buyer can fall through, putting them back at square one weeks later.
• Propose a lock-out agreement. If the seller is wavering rather than gone, offer to formalise a short exclusivity period so you can reach exchange without looking over your shoulder. We explain how these work below.
• Walk away. If the seller has committed to the other buyer, or the new price is more than the home is worth to you, walking away isn't defeat, it's discipline. Overpaying by thousands to "win" is the more expensive mistake.

Whichever you choose, ask your solicitor to pause any work that hasn't started yet, so you aren't billed for it. There's no right to compensation because there was no contract, and searches relate to that specific property, so they can't be reused on your next purchase.

Worked example: match it, or walk away?

You're buying at £400,000 with a £360,000 mortgage agreed. Three weeks in, a rival offers £410,000. You've already spent around £2,300 on a survey, searches and initial legal work, and none of it is refundable. Here's the decision maths:

• To match at £410,000, you need another £10,000. Your lender will usually lend against the lower of the price and its valuation, so if it values the home at £400,000, the whole £10,000 comes from your own pocket.
• If £410,000 is above what the home is likely to value at, you risk a down valuation later, where the lender won't lend against the full price. In that case, matching just moves the problem.
• Walking away costs you the £2,300 already spent. That's painful, but it's final, and it's small next to overpaying on the biggest purchase of your life.

The £2,300 is a sunk cost: it's gone whichever way you decide, so it shouldn't drive the decision. The only live question is whether £410,000 is a price you'd happily pay if the home came to market fresh tomorrow. If yes, match. If you hesitate, that hesitation is your answer.

How to stop it happening in the first place

The best defence isn't fighting gazumping, it's closing the window in which it can happen. Every day between offer and exchange is a day a rival can appear, and the government puts the average purchase at around 120 days. Here's how the main protections compare:

The first line matters most. A buyer who reaches exchange in six weeks is far harder to gazump than one who lets the process drift. For getting the opening bid right, see our guide on how to make the right offer on a house, and our conveyancing timeline shows where the time usually goes.

Lock-out agreements, explained

This is the protection most buyers have never heard of, and it's where a solicitor genuinely helps.

A lock-out agreement, also called an exclusivity agreement, is a short separate contract in which the seller agrees not to negotiate with or sell to anyone else for a fixed period, commonly two to six weeks, while you work towards exchange. It doesn't force the seller to sell to you. It stops them shopping your deal around during the protected window.

The legal detail matters. An open-ended promise to "negotiate in good faith" is too uncertain to enforce, as the House of Lords held in Walford v Miles [1992] 2 AC 128. But a promise not to deal with anyone else for a fixed, certain period, supported by consideration, can be enforced, as the Court of Appeal confirmed in Pitt v PHH Asset Management [1994] 1 WLR 327. The consideration can be a payment, or a promise from the buyer, such as to be ready to exchange within the period.

In short: a promise that the seller won't do something for a defined time holds, while a promise to keep negotiating doesn't.

• What it can do: give you breathing space to spend money on surveys and searches without fear of being gazumped mid-process, and a possible claim for your wasted costs if the seller breaks it.
• What it can't do: force a sale or guarantee you'll agree final terms. If the period ends without exchange, the seller is free again.

Lock-out agreements are most common on higher-value or competitive purchases. If you're in a busy market, or you've been gazumped once already, ask your solicitor whether one is worth proposing.

Will the 2026 reforms end gazumping?

Possibly, but not yet. On 19 June 2026 the government announced major reforms to home buying and selling, aimed squarely at the gap gazumping exploits. Two changes matter most:

• Upfront sales packs. Sellers and agents will have to provide key information, such as the home's condition, leasehold costs and chain status, at the point of listing.
• Binding conditional contracts. A sale would become legally binding much earlier, around the time an offer is accepted, with penalties for pulling out without a valid reason. If introduced as described, this would make gazumping a breach of contract.

The government expects the reforms to cut around four weeks from transactions and save buyers about £650 on average. But none of it is law yet. Binding contracts will only come in once sales packs are embedded, and the legislation is expected by the end of this Parliament, around 2029. Until then, gazumping remains legal, and the protections above are your only real defence.

Gazumping in Scotland

Buying in Scotland is very different. Once "missives", the formal offer and acceptance letters exchanged between solicitors, are concluded, you have a binding contract, and that usually happens far earlier than exchange in England and Wales. With a much shorter window, gazumping is correspondingly rarer, though not impossible before missives conclude. The rest of this guide applies to England and Wales.

Related guides

For more on keeping your purchase on track, these guides may help:

• Common conveyancing problems and what to do about them
• What to do if your property chain collapses
• How to make the right offer on a house
• Conveyancing timeline

Frequently asked questions

I've been gazumped after paying for a survey and searches. Can I claim those costs?

Almost never. There was no binding contract, so the seller owes you nothing. The exception is where the seller breached a lock-out agreement, in which case you may be able to claim your wasted costs. Some insurers sell home buyer protection policies that cover these losses, so check the terms before you offer.

Should I accept a gazumping demand to increase my offer?

You're never obliged to. Ask the agent to confirm the rival offer in writing, then weigh how much you want this home, whether you can comfortably afford the higher figure, and whether it risks a down valuation. If you'd happily pay the new price tomorrow, matching is rational. If you hesitate, holding firm or walking away is often wiser.

Can I be gazumped after exchange of contracts?

No. Once contracts are exchanged you have a binding contract, and the seller can't accept another offer. Exchange is the finish line for gazumping risk, which is why reaching it quickly is your best protection.

Is gazumping the same as gazundering?

No, they're opposites. Gazumping is the seller accepting a higher offer and dropping you before exchange. Gazundering is the buyer cutting their offer, usually just before exchange. Both are legal in England and Wales.

Does taking the property off the market stop gazumping?

It helps but guarantees nothing. It deters casual interest, but it isn't legally binding, and the agent must still pass on any offers the seller hasn't ruled out in writing. For real protection, you need a lock-out agreement or a quick exchange.

Is gazumping illegal anywhere in the UK?

It's legal in England and Wales until exchange. In Scotland it's far less viable because concluded missives create a binding contract much earlier. The 2026 reforms would, once in force, make gazumping a breach of contract, but that hasn't happened yet.

How Bird & Co helps you reach exchange faster

Because speed is the best protection against gazumping, the pace of your conveyancer is part of your defence. Our conveyancing is transparent and fixed-fee, and you'll have a dedicated conveyancer you can contact directly when the clock matters.

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